DVD-9 Layer Break Question (PGCedit)

[sdsumike619]

I use GEAR Pro for mastering to DLT and I use their layer break calculator spreadsheet. Based on their spreadsheet, I determined that my cell for the layer break is 20 with entry sector at 146,842 (see screen shot) The mastering facility reported to me that Eclipse detected an error because the layer break was not set on a cell flagged as non-seamless. They said the only problem with this error is that there might be a 1-2 second pause when the layer break occurs. I have the replicated disc and confirm there is a pause on tabletop players. No big deal.

My question is about setting the non-seamless flag with PGCedit. Should I set it at cell 20 or 19? In other words, does the layer break happen at the beginning of the chosen cell, or does it happen at the end of the previous cell? When I play the disc in the player the break in playback occurs right at 8:20 which is the end of cell 19 and the beginning of cell 20

I'm going to submit another set of DLT's to the mastering facility after using PGCedit to set the non-seamless flag. They said they'd run it through Eclipse again for me at no charge. But I need to know if it should be in 19 or 20. My guess is that it should be in cell 20..

Another question I have: Why is it that the title where the layer break occurs has a bunch of cells, while most other titles have only 2 cells. For example, title 8 is about the same length as title 5, but title 8 only has 2 cells, while title 5 has 45 cells?

[ron spencer]

you should post this in the pgcedit forum at doom9

[sdsumike619]

Ron, thanks, I did just that

[videopoo]

All layer breaks by spec need to be Non-Seamless. It happens at the end of the cell. What did you author in? Explain how your title is set up. No way to tell by looking at your pic.

[sdsumike619]

I used Adobe Encore CS3 for the authoring and the crappy thing is that in this case, it did not set any cell as non-seamless. I was under the mistaken impression that GEAR does that when IT sets the layer break but I was wrong. The only issue with the cell not being set as non-seamless is the short pause while the laser resets to focus on Layer1.

You said that the layer break happens at the end of the cell, so if I selected cell 20, that means cell 20 should be set as non-seamless? On the PGC forum, they're telling me that the non-seamless flag should be set on cell 19....

[videopoo]

No...20 is the cell you want. On doom they say don't worry about seamless vs. non-seamless. This is so wrong! All layer breaks need to need non-seamless for replication - the pause is on every DL disc you've ever bought. Scary some of the info you get off the net

Encore is junk...dont use it again!

[sdsumike619]

Yes, he corrected himself, cell 20 is correct. I'm going ahead with this run because the slight pause is not a big deal. But on all future projects, I now know how to ensure the layer break is on a non-seamless cell, via PGCedit

[manono]

Once you have the layer break set correctly, the amount of the pause depends on the player you have. I have never ever noticed a pause at a layer break - the Oppos are virtually seamless. With some players it can take a couple of seconds or more. Have a look at this:

http://www.hometheaterhifi.com/cgi-bin/shootout.cgi?function=search&articles=all

In the second column from the far right it gives the layer break times for dozens of players. As you go down the list to the poorer players, you'll start to see the times in red, and those are the lousy players as far as layer change times go.

[sdsumike619]

How interesting. I see my cheapo cyberhome player listed on there as 1.5 seconds and that is exactly what I see with it. I don't see my particular sony listed though.. It's not a big deal. So far on the two I've played this disc on with the layer break on a seamless flagged cell, the pause happens on the tabletop players, but not the computer dvd drives.